Motion sensor



FIG. 1 is a perspective view of a motion sensor showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof, the back elevational view being a mirror image;

FIG. 4 is a right side elevational view thereof, the left side elevation view being a mirror image; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a motion sensor, as shown and described. 